Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 377 insertions, 0 deletions

diff --git a/REORG.TODO/iconvdata/utf-16.c b/REORG.TODO/iconvdata/utf-16.c
new file mode 100644
index 0000000000..078f7cfcac
--- /dev/null
+++ b/REORG.TODO/iconvdata/utf-16.c
@@ -0,0 +1,377 @@
+/* Conversion module for UTF-16.
+   Copyright (C) 1999-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <byteswap.h>
+#include <dlfcn.h>
+#include <gconv.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* This is the Byte Order Mark character (BOM).  */
+#define BOM	0xfeff
+/* And in the other byte order.  */
+#define BOM_OE	0xfffe
+
+
+/* Definitions used in the body of the `gconv' function.  */
+#define FROM_LOOP		from_utf16_loop
+#define TO_LOOP			to_utf16_loop
+#define DEFINE_INIT		0
+#define DEFINE_FINI		0
+#define MIN_NEEDED_FROM		2
+#define MAX_NEEDED_FROM		4
+#define MIN_NEEDED_TO		4
+#define ONE_DIRECTION		0
+#define FROM_DIRECTION		(dir == from_utf16)
+#define PREPARE_LOOP \
+  enum direction dir = ((struct utf16_data *) step->__data)->dir;	      \
+  enum variant var = ((struct utf16_data *) step->__data)->var;		      \
+  if (__glibc_unlikely (data->__invocation_counter == 0))		      \
+    {									      \
+      if (var == UTF_16)						      \
+	{								      \
+	  if (FROM_DIRECTION)						      \
+	    {								      \
+	      /* We have to find out which byte order the file is	      \
+		 encoded in.  */					      \
+	      if (inptr + 2 > inend)					      \
+		return (inptr == inend					      \
+			? __GCONV_EMPTY_INPUT : __GCONV_INCOMPLETE_INPUT);    \
+									      \
+	      if (get16u (inptr) == BOM)				      \
+		/* Simply ignore the BOM character.  */			      \
+		*inptrp = inptr += 2;					      \
+	      else if (get16u (inptr) == BOM_OE)			      \
+		{							      \
+		  data->__flags |= __GCONV_SWAP;			      \
+		  *inptrp = inptr += 2;					      \
+		}							      \
+	    }								      \
+	  else if (!FROM_DIRECTION && !data->__internal_use)		      \
+	    {								      \
+	      /* Emit the Byte Order Mark.  */				      \
+	      if (__glibc_unlikely (outbuf + 2 > outend))		      \
+		return __GCONV_FULL_OUTPUT;				      \
+									      \
+	      put16u (outbuf, BOM);					      \
+	      outbuf += 2;						      \
+	    }								      \
+	}								      \
+      else if ((var == UTF_16LE && BYTE_ORDER == BIG_ENDIAN)		      \
+	       || (var == UTF_16BE && BYTE_ORDER == LITTLE_ENDIAN))	      \
+	data->__flags |= __GCONV_SWAP;					      \
+    }									      \
+  const int swap = data->__flags & __GCONV_SWAP;
+#define EXTRA_LOOP_ARGS		, swap
+
+
+/* Direction of the transformation.  */
+enum direction
+{
+  illegal_dir,
+  to_utf16,
+  from_utf16
+};
+
+enum variant
+{
+  illegal_var,
+  UTF_16,
+  UTF_16LE,
+  UTF_16BE
+};
+
+struct utf16_data
+{
+  enum direction dir;
+  enum variant var;
+};
+
+
+extern int gconv_init (struct __gconv_step *step);
+int
+gconv_init (struct __gconv_step *step)
+{
+  /* Determine which direction.  */
+  struct utf16_data *new_data;
+  enum direction dir = illegal_dir;
+  enum variant var = illegal_var;
+  int result;
+
+  if (__strcasecmp (step->__from_name, "UTF-16//") == 0)
+    {
+      dir = from_utf16;
+      var = UTF_16;
+    }
+  else if (__strcasecmp (step->__to_name, "UTF-16//") == 0)
+    {
+      dir = to_utf16;
+      var = UTF_16;
+    }
+  else if (__strcasecmp (step->__from_name, "UTF-16BE//") == 0)
+    {
+      dir = from_utf16;
+      var = UTF_16BE;
+    }
+  else if (__strcasecmp (step->__to_name, "UTF-16BE//") == 0)
+    {
+      dir = to_utf16;
+      var = UTF_16BE;
+    }
+  else if (__strcasecmp (step->__from_name, "UTF-16LE//") == 0)
+    {
+      dir = from_utf16;
+      var = UTF_16LE;
+    }
+  else if (__strcasecmp (step->__to_name, "UTF-16LE//") == 0)
+    {
+      dir = to_utf16;
+      var = UTF_16LE;
+    }
+
+  result = __GCONV_NOCONV;
+  if (__builtin_expect (dir, to_utf16) != illegal_dir)
+    {
+      new_data = (struct utf16_data *) malloc (sizeof (struct utf16_data));
+
+      result = __GCONV_NOMEM;
+      if (new_data != NULL)
+	{
+	  new_data->dir = dir;
+	  new_data->var = var;
+	  step->__data = new_data;
+
+	  if (dir == from_utf16)
+	    {
+	      step->__min_needed_from = MIN_NEEDED_FROM;
+	      step->__max_needed_from = MAX_NEEDED_FROM;
+	      step->__min_needed_to = MIN_NEEDED_TO;
+	      step->__max_needed_to = MIN_NEEDED_TO;
+	    }
+	  else
+	    {
+	      step->__min_needed_from = MIN_NEEDED_TO;
+	      step->__max_needed_from = MIN_NEEDED_TO;
+	      step->__min_needed_to = MIN_NEEDED_FROM;
+	      step->__max_needed_to = MAX_NEEDED_FROM;
+	    }
+
+	  step->__stateful = 0;
+
+	  result = __GCONV_OK;
+	}
+    }
+
+  return result;
+}
+
+
+extern void gconv_end (struct __gconv_step *data);
+void
+gconv_end (struct __gconv_step *data)
+{
+  free (data->__data);
+}
+
+
+/* Convert from the internal (UCS4-like) format to UTF-16.  */
+#define MIN_NEEDED_INPUT	MIN_NEEDED_TO
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_FROM
+#define MAX_NEEDED_OUTPUT	MAX_NEEDED_FROM
+#define LOOPFCT			TO_LOOP
+#define BODY \
+  {									      \
+    uint32_t c = get32 (inptr);						      \
+									      \
+    if (__glibc_unlikely (c >= 0xd800 && c < 0xe000))			      \
+      {									      \
+	/* Surrogate characters in UCS-4 input are not valid.		      \
+	   We must catch this.  If we let surrogates pass through,	      \
+	   attackers could make a security hole exploit by		      \
+	   synthesizing any desired plane 1-16 character.  */		      \
+	result = __GCONV_ILLEGAL_INPUT;					      \
+	if (! ignore_errors_p ())					      \
+	  break;							      \
+	inptr += 4;							      \
+	++*irreversible;						      \
+	continue;							      \
+      }									      \
+									      \
+    if (swap)								      \
+      {									      \
+	if (__glibc_unlikely (c >= 0x10000))				      \
+	  {								      \
+	    if (__glibc_unlikely (c >= 0x110000))			      \
+	      {								      \
+		STANDARD_TO_LOOP_ERR_HANDLER (4);			      \
+	      }								      \
+									      \
+	    /* Generate a surrogate character.  */			      \
+	    if (__glibc_unlikely (outptr + 4 > outend))			      \
+	      {								      \
+		/* Overflow in the output buffer.  */			      \
+		result = __GCONV_FULL_OUTPUT;				      \
+		break;							      \
+	      }								      \
+									      \
+	    put16 (outptr, bswap_16 (0xd7c0 + (c >> 10)));		      \
+	    outptr += 2;						      \
+	    put16 (outptr, bswap_16 (0xdc00 + (c & 0x3ff)));		      \
+	  }								      \
+	else								      \
+	  put16 (outptr, bswap_16 (c));					      \
+      }									      \
+    else								      \
+      {									      \
+	if (__glibc_unlikely (c >= 0x10000))				      \
+	  {								      \
+	    if (__glibc_unlikely (c >= 0x110000))			      \
+	      {								      \
+		STANDARD_TO_LOOP_ERR_HANDLER (4);			      \
+	      }								      \
+									      \
+	    /* Generate a surrogate character.  */			      \
+	    if (__glibc_unlikely (outptr + 4 > outend))			      \
+	      {								      \
+		/* Overflow in the output buffer.  */			      \
+		result = __GCONV_FULL_OUTPUT;				      \
+		break;							      \
+	      }								      \
+									      \
+	    put16 (outptr, 0xd7c0 + (c >> 10));				      \
+	    outptr += 2;						      \
+	    put16 (outptr, 0xdc00 + (c & 0x3ff));			      \
+	  }								      \
+	else								      \
+	  put16 (outptr, c);						      \
+      }									      \
+    outptr += 2;							      \
+    inptr += 4;								      \
+  }
+#define LOOP_NEED_FLAGS
+#define EXTRA_LOOP_DECLS \
+	, int swap
+#include <iconv/loop.c>
+
+
+/* Convert from UTF-16 to the internal (UCS4-like) format.  */
+#define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
+#define MAX_NEEDED_INPUT	MAX_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
+#define LOOPFCT			FROM_LOOP
+#define BODY \
+  {									      \
+    uint16_t u1 = get16 (inptr);					      \
+									      \
+    if (swap)								      \
+      {									      \
+	u1 = bswap_16 (u1);						      \
+									      \
+	if (__builtin_expect (u1 < 0xd800, 1) || u1 > 0xdfff)		      \
+	  {								      \
+	    /* No surrogate.  */					      \
+	    put32 (outptr, u1);						      \
+	    inptr += 2;							      \
+	  }								      \
+	else								      \
+	  {								      \
+	    uint16_t u2;						      \
+									      \
+	    if (__glibc_unlikely (u1 >= 0xdc00))			      \
+	      {								      \
+		/* This is no valid first word for a surrogate.  */	      \
+		STANDARD_FROM_LOOP_ERR_HANDLER (2);			      \
+	      }								      \
+									      \
+	    /* It's a surrogate character.  At least the first word says      \
+	       it is.  */						      \
+	    if (__glibc_unlikely (inptr + 4 > inend))			      \
+	      {								      \
+		/* We don't have enough input for another complete input      \
+		   character.  */					      \
+		result = __GCONV_INCOMPLETE_INPUT;			      \
+		break;							      \
+	      }								      \
+									      \
+	    inptr += 2;							      \
+	    u2 = bswap_16 (get16 (inptr));				      \
+	    if (__builtin_expect (u2 < 0xdc00, 0)			      \
+		|| __builtin_expect (u2 > 0xdfff, 0))			      \
+	      {								      \
+		/* This is no valid second word for a surrogate.  */	      \
+		inptr -= 2;						      \
+		STANDARD_FROM_LOOP_ERR_HANDLER (2);			      \
+	      }								      \
+									      \
+	    put32 (outptr, ((u1 - 0xd7c0) << 10) + (u2 - 0xdc00));	      \
+	    inptr += 2;							      \
+	  }								      \
+      }									      \
+    else								      \
+      {									      \
+	if (__builtin_expect (u1 < 0xd800, 1) || u1 > 0xdfff)		      \
+	  {								      \
+	    /* No surrogate.  */					      \
+	    put32 (outptr, u1);						      \
+	    inptr += 2;							      \
+	  }								      \
+	else								      \
+	  {								      \
+	    if (__glibc_unlikely (u1 >= 0xdc00))			      \
+	      {								      \
+		/* This is no valid first word for a surrogate.  */	      \
+		STANDARD_FROM_LOOP_ERR_HANDLER (2);			      \
+	      }								      \
+									      \
+	    /* It's a surrogate character.  At least the first word says      \
+	       it is.  */						      \
+	    if (__glibc_unlikely (inptr + 4 > inend))			      \
+	      {								      \
+		/* We don't have enough input for another complete input      \
+		   character.  */					      \
+		result = __GCONV_INCOMPLETE_INPUT;			      \
+		break;							      \
+	      }								      \
+									      \
+	    inptr += 2;							      \
+	    uint16_t u2 = get16 (inptr);				      \
+	    if (__builtin_expect (u2 < 0xdc00, 0)			      \
+		|| __builtin_expect (u2 > 0xdfff, 0))			      \
+	      {								      \
+		/* This is no valid second word for a surrogate.  */	      \
+		inptr -= 2;						      \
+		STANDARD_FROM_LOOP_ERR_HANDLER (2);			      \
+	      }								      \
+									      \
+	    put32 (outptr, ((u1 - 0xd7c0) << 10) + (u2 - 0xdc00));	      \
+	    inptr += 2;							      \
+	  }								      \
+      }									      \
+    outptr += 4;							      \
+  }
+#define LOOP_NEED_FLAGS
+#define EXTRA_LOOP_DECLS \
+	, int swap
+#include <iconv/loop.c>
+
+
+/* Now define the toplevel functions.  */
+#include <iconv/skeleton.c>